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<head><meta charset="utf-8"><title>weekly meeting 2019-06-20 #54818 · t-compiler · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/index.html">t-compiler</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html">weekly meeting 2019-06-20 #54818</a></h3>

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<a name="168594938"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168594938" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168594938">(Jun 20 2019 at 13:28)</a>:</h4>
<p>Hi <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span> ; the triage meeting will be starting in about 32 minutes.</p>



<a name="168595022"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168595022" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168595022">(Jun 20 2019 at 13:29)</a>:</h4>
<p>I will be doing <a href="#narrow/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-06-20.20.2354818" title="#narrow/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-06-20.20.2354818">pre-triage in a parallel topic</a></p>



<a name="168598039"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598039" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598039">(Jun 20 2019 at 14:00)</a>:</h4>
<p>Hi again <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span></p>



<a name="168598050"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598050" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598050">(Jun 20 2019 at 14:00)</a>:</h4>
<p>I forgot to check in about WG-checkin</p>



<a name="168598083"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598083" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598083">(Jun 20 2019 at 14:01)</a>:</h4>
<p>but given how many beta regressions and nominations and P-highs we have</p>



<a name="168598123"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598123" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598123">(Jun 20 2019 at 14:01)</a>:</h4>
<p>(and the fact that <span class="user-mention" data-user-id="116009">@nikomatsakis</span> is out at the Moz All Hands and presumably not attending this meeting)</p>



<a name="168598149"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598149" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598149">(Jun 20 2019 at 14:01)</a>:</h4>
<p>lets not do WG check-in today, and just focus on issue triage, nominations,. etc.</p>



<a name="168598239"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598239" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598239">(Jun 20 2019 at 14:02)</a>:</h4>
<p>but first of all: Any <strong>announcements</strong> ?? Lets wait a few minutes and see</p>



<a name="168598291"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598291" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> oli <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598291">(Jun 20 2019 at 14:03)</a>:</h4>
<p>I will be offline for the first two July weeks and have reduced rustc time afterwards since I'm starting a new job</p>



<a name="168598313"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598313" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598313">(Jun 20 2019 at 14:03)</a>:</h4>
<p>ah sad news is <em>not allowed</em> <span class="user-mention" data-user-id="124288">@oli</span> !</p>



<a name="168598319"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598319" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598319">(Jun 20 2019 at 14:03)</a>:</h4>
<p>but I kid of course. Half kid.</p>



<a name="168598326"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598326" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598326">(Jun 20 2019 at 14:03)</a>:</h4>
<p>so we done did the <code>'gcx</code> removal already</p>



<a name="168598402"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598402" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598402">(Jun 20 2019 at 14:04)</a>:</h4>
<p>and you beta-nominated the 'gcx removal I assume ( <span aria-label="lol" class="emoji emoji-1f606" role="img" title="lol">:lol:</span> )</p>



<a name="168598416"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598416" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598416">(Jun 20 2019 at 14:04)</a>:</h4>
<p>/me is in a jovial mood today</p>



<a name="168598459"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598459" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> oli <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598459">(Jun 20 2019 at 14:04)</a>:</h4>
<blockquote>
<p>/me is in a jovial mood today</p>
</blockquote>
<p>the best mood of them all</p>



<a name="168598461"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598461" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598461">(Jun 20 2019 at 14:04)</a>:</h4>
<p>so I started to pursuit some AST/HIR restructuring, with <a href="https://github.com/rust-lang/rust/issues/61968" target="_blank" title="https://github.com/rust-lang/rust/issues/61968">#61968</a></p>



<a name="168598477"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598477" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598477">(Jun 20 2019 at 14:05)</a>:</h4>
<p>I'm not sure that should've been merged already :|</p>



<a name="168598496"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598496" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598496">(Jun 20 2019 at 14:05)</a>:</h4>
<p>since it kinda conflicted with <span class="user-mention" data-user-id="116466">@Zoxc</span>'s own work in this area</p>



<a name="168598533"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598533" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598533">(Jun 20 2019 at 14:05)</a>:</h4>
<p>where did <span class="user-mention" data-user-id="116466">@Zoxc</span> register their concerns? Just in private messages or irc or discord or something?</p>



<a name="168598535"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598535" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598535">(Jun 20 2019 at 14:05)</a>:</h4>
<p>but either way I think we should move towards respecting AST/HIR integrity and not go around cloning or mutating nodes all over the place</p>



<a name="168598592"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598592" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598592">(Jun 20 2019 at 14:06)</a>:</h4>
<p>we were talking over Discord and I forgot to leave a note on-thread last night</p>



<a name="168598620"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598620" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598620">(Jun 20 2019 at 14:06)</a>:</h4>
<p>i see</p>



<a name="168598642"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598642" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598642">(Jun 20 2019 at 14:06)</a>:</h4>
<p>one thing I noticed  that concerned me is that diagnostic code and other pieces of the compiler were cloning the HIR instead of passing around references, even if they had no need to actually keep a separate copy of anything</p>



<a name="168598648"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598648" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598648">(Jun 20 2019 at 14:06)</a>:</h4>
<p>I assume whatever the concerns were, they wouldn't justify backing the PR out</p>



<a name="168598672"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598672" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598672">(Jun 20 2019 at 14:07)</a>:</h4>
<p>yeah it just means they have to adjust their own PR further</p>



<a name="168598721"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598721" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598721">(Jun 20 2019 at 14:08)</a>:</h4>
<p>Speaking of AST/HIR restructuring, I could use your eyes on <a href="https://github.com/rust-lang/rust/pull/61988" target="_blank" title="https://github.com/rust-lang/rust/pull/61988">https://github.com/rust-lang/rust/pull/61988</a> <span class="user-mention" data-user-id="116083">@pnkfelix</span> <span aria-label="slight smile" class="emoji emoji-1f642" role="img" title="slight smile">:slight_smile:</span></p>



<a name="168598792"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598792" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598792">(Jun 20 2019 at 14:08)</a>:</h4>
<p>oh yeah <span class="user-mention" data-user-id="126931">@centril</span> has been trying to push for a more desugared HIR for a while now</p>



<a name="168598828"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598828" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598828">(Jun 20 2019 at 14:08)</a>:</h4>
<p><span class="user-mention" data-user-id="126931">@centril</span> would you like to present this stuff on a friday "design" meeting?</p>



<a name="168598844"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598844" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598844">(Jun 20 2019 at 14:09)</a>:</h4>
<p>yeah it might be good to make some sort of proposal for that</p>



<a name="168598853"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598853" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598853">(Jun 20 2019 at 14:09)</a>:</h4>
<p>I should too, except right now I'm mostly doing small things here and there and have no concrete plans yet</p>



<a name="168598863"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598863" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598863">(Jun 20 2019 at 14:09)</a>:</h4>
<p>the design meeting process is documented at <a href="https://github.com/rust-lang/rust/issues/58850" target="_blank" title="https://github.com/rust-lang/rust/issues/58850">#58850</a></p>



<a name="168598881"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598881" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598881">(Jun 20 2019 at 14:09)</a>:</h4>
<p>(other than we should do arenas and "persistent collections"-like handling of the AST - at least the HIR is already created immutable)</p>



<a name="168598894"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598894" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598894">(Jun 20 2019 at 14:09)</a>:</h4>
<p>(well, the documentation of the protocol isn't actuallyt here, but should be linked from there)</p>



<a name="168598984"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598984" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598984">(Jun 20 2019 at 14:10)</a>:</h4>
<p>Beyond this PR and the 2/6 PR that removes IfLet and WhileLet I think we should remove &amp;&amp; and || as binary operators</p>



<a name="168598993"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168598993" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168598993">(Jun 20 2019 at 14:10)</a>:</h4>
<p>but that might break some const code</p>



<a name="168599002"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599002" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599002">(Jun 20 2019 at 14:10)</a>:</h4>
<p>due to lack of control flow in consts atm</p>



<a name="168599013"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599013" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599013">(Jun 20 2019 at 14:11)</a>:</h4>
<p>yeah we can't do that yet. and I'm not sure we should... it's inching into HIR -&gt; MIR territory</p>



<a name="168599025"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599025" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599025">(Jun 20 2019 at 14:11)</a>:</h4>
<p>hence we should discuss how much desugaring we even want at the HIR level (in a design meeting!)</p>



<a name="168599034"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599034" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599034">(Jun 20 2019 at 14:11)</a>:</h4>
<p>okay hold on</p>



<a name="168599039"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599039" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599039">(Jun 20 2019 at 14:11)</a>:</h4>
<p>lets get back on course and do triage</p>



<a name="168599041"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599041" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599041">(Jun 20 2019 at 14:11)</a>:</h4>
<p>(deleted)</p>



<a name="168599072"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599072" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599072">(Jun 20 2019 at 14:11)</a>:</h4>
<p>(see my goal here is to lure you all in with @eddyb's devious plans)</p>



<a name="168599101"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599101" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599101">(Jun 20 2019 at 14:12)</a>:</h4>
<p>and then bait-and-switch to triage</p>



<a name="168599122"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599122" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599122">(Jun 20 2019 at 14:12)</a>:</h4>
<p>:D</p>



<a name="168599158"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599158" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599158">(Jun 20 2019 at 14:12)</a>:</h4>
<p>lets do <a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=label%3Abeta-nominated+label%3AT-compiler" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=label%3Abeta-nominated+label%3AT-compiler">beta-nominations first</a> because I'm terrified we'll skip them otherwise.</p>



<a name="168599177"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599177" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599177">(Jun 20 2019 at 14:13)</a>:</h4>
<p><span aria-label="heart" class="emoji emoji-2764" role="img" title="heart">:heart:</span></p>



<a name="168599179"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599179" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599179">(Jun 20 2019 at 14:13)</a>:</h4>
<p>(I'm mostly worried we'll be stepping in eachother's toes. maybe we should have a system different from the meetings to announce/track work in the compiler that's interesting/disruptive but not necessarily big enough to warrant design planning)</p>



<a name="168599184"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599184" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599184">(Jun 20 2019 at 14:13)</a>:</h4>
<p>beta nom: "resolve: Temporarily make <code>panic</code> available with <code>no_implicit_prelude</code>" <a href="https://github.com/rust-lang/rust/issues/61971" target="_blank" title="https://github.com/rust-lang/rust/issues/61971">#61971</a></p>



<a name="168599224"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599224" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599224">(Jun 20 2019 at 14:13)</a>:</h4>
<p>I don't feel I understand why we are doing this</p>



<a name="168599274"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599274" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599274">(Jun 20 2019 at 14:14)</a>:</h4>
<p>it seems even <span class="user-mention" data-user-id="123856">@Vadim Petrochenkov</span> does not necessarily want to do this ?</p>



<a name="168599288"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599288" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599288">(Jun 20 2019 at 14:14)</a>:</h4>
<p>Is this a semantic change on beta?</p>



<a name="168599313"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599313" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599313">(Jun 20 2019 at 14:14)</a>:</h4>
<p>macros have a lot of historical baggage and the only thing I understand is that we're trying to skirt around breaking changes but also make progress?</p>



<a name="168599315"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599315" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Vadim Petrochenkov <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599315">(Jun 20 2019 at 14:14)</a>:</h4>
<blockquote>
<p>I don't feel I understand why we are doing this</p>
</blockquote>
<p>Due to a beta regression.<br>
But yes, I'd prefer not to do it, but rather close the regression issue as wontfix.</p>



<a name="168599317"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599317" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599317">(Jun 20 2019 at 14:14)</a>:</h4>
<p>in particular <span class="user-mention" data-user-id="123856">@Vadim Petrochenkov</span> said that they'd <em>rather</em> close <a href="https://github.com/rust-lang/rust/issues/61567" target="_blank" title="https://github.com/rust-lang/rust/issues/61567">#61567</a> as a wont-fix</p>



<a name="168599362"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599362" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599362">(Jun 20 2019 at 14:15)</a>:</h4>
<p>didn't we say a long time ago that we shouldn't have accidentally let <code>#![no_implicit_prelude]</code> be stable?</p>



<a name="168599374"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599374" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599374">(Jun 20 2019 at 14:15)</a>:</h4>
<p>I have vague memories of a meeting where that came up</p>



<a name="168599379"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599379" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599379">(Jun 20 2019 at 14:15)</a>:</h4>
<p><span class="user-mention" data-user-id="123856">@Vadim Petrochenkov</span>  what is the behavior of other macros with <code>no_implicit_prelude</code> atm ?</p>



<a name="168599471"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599471" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599471">(Jun 20 2019 at 14:16)</a>:</h4>
<p>they are .. fixed by PR <a href="https://github.com/rust-lang/rust/issues/61629" target="_blank" title="https://github.com/rust-lang/rust/issues/61629">#61629</a> I think?</p>



<a name="168599475"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599475" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Vadim Petrochenkov <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599475">(Jun 20 2019 at 14:16)</a>:</h4>
<blockquote>
<p>what is the behavior of other macros with no_implicit_prelude atm ?</p>
</blockquote>
<p>Built-ins are available, but others are not (at least on 2018 edition).</p>



<a name="168599511"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599511" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599511">(Jun 20 2019 at 14:16)</a>:</h4>
<p>Given that <code>panic!</code> is not a built-in then it should not be available I think</p>



<a name="168599516"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599516" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599516">(Jun 20 2019 at 14:16)</a>:</h4>
<p>so I think wontfix is right</p>



<a name="168599551"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599551" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599551">(Jun 20 2019 at 14:17)</a>:</h4>
<p><span class="user-mention" data-user-id="123856">@Vadim Petrochenkov</span> was PR <a href="https://github.com/rust-lang/rust/issues/61629" target="_blank" title="https://github.com/rust-lang/rust/issues/61629">#61629</a> supposed to be nominated for beta-backport, given that issue <a href="https://github.com/rust-lang/rust/issues/61567" target="_blank" title="https://github.com/rust-lang/rust/issues/61567">#61567</a> is a stable-to-beta regression ?</p>



<a name="168599553"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599553" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599553">(Jun 20 2019 at 14:17)</a>:</h4>
<p>if we move the builtins to <code>libcore</code>, how are we going to deal with <code>#![no_implicit_prelude]</code>? I was hoping there was no stable way to turn the prelude off...</p>



<a name="168599636"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599636" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599636">(Jun 20 2019 at 14:18)</a>:</h4>
<p>/me will nominate <a href="https://github.com/rust-lang/rust/issues/61629" target="_blank" title="https://github.com/rust-lang/rust/issues/61629">#61629</a> now to make sure we get to it.</p>



<a name="168599666"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599666" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599666">(Jun 20 2019 at 14:18)</a>:</h4>
<p>or is <a href="https://github.com/rust-lang/rust/issues/61567" target="_blank" title="https://github.com/rust-lang/rust/issues/61567">#61567</a> specifically about <code>panic</code> ...</p>



<a name="168599802"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599802" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Vadim Petrochenkov <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599802">(Jun 20 2019 at 14:20)</a>:</h4>
<blockquote>
<p>if we move the builtins to libcore, how are we going to deal with #![no_implicit_prelude]?</p>
</blockquote>
<p>Even if the macro is introduced through <code>macro_use</code>, we still should be able to determine that it originally comes from <code>#[rustc_builtin_macro = "foo"]</code> and make an exception for <code>no_implicit_prelude</code> logic.</p>



<a name="168599806"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599806" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599806">(Jun 20 2019 at 14:20)</a>:</h4>
<p>am I being dumb here? Is <code>panic</code> the only one that is relevant for stable-to-beta regression ?</p>



<a name="168599908"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599908" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Vadim Petrochenkov <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599908">(Jun 20 2019 at 14:21)</a>:</h4>
<blockquote>
<p>Is panic the only one that is relevant for stable-to-beta regression ?</p>
</blockquote>
<p>Yes, if <a href="https://github.com/rust-lang/rust/pull/61629" target="_blank" title="https://github.com/rust-lang/rust/pull/61629">https://github.com/rust-lang/rust/pull/61629</a> is backported to beta.</p>



<a name="168599926"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599926" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599926">(Jun 20 2019 at 14:22)</a>:</h4>
<p>is it because <code>assert_eq!</code> is now a builtin, but <code>panic!</code> isn't?</p>



<a name="168599969"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599969" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599969">(Jun 20 2019 at 14:22)</a>:</h4>
<p>okay, that was the important "if" statement I was waiting for</p>



<a name="168599971"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168599971" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168599971">(Jun 20 2019 at 14:22)</a>:</h4>
<p>so it's a rare case of a built-in calling a non-built-in?</p>



<a name="168600011"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168600011" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168600011">(Jun 20 2019 at 14:22)</a>:</h4>
<p>wait... <code>assert_eq</code> is built-in?</p>



<a name="168600024"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168600024" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168600024">(Jun 20 2019 at 14:23)</a>:</h4>
<p><a href="https://doc.rust-lang.org/nightly/src/core/macros.rs.html#45-78" target="_blank" title="https://doc.rust-lang.org/nightly/src/core/macros.rs.html#45-78">https://doc.rust-lang.org/nightly/src/core/macros.rs.html#45-78</a></p>



<a name="168600054"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168600054" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Vadim Petrochenkov <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168600054">(Jun 20 2019 at 14:23)</a>:</h4>
<blockquote>
<p>so it's a rare case of a built-in calling a non-built-in?</p>
</blockquote>
<p>It's a rare case of a std lib macro calling <code>panic</code> specifically.<br>
<a href="https://github.com/rust-lang/rust/pull/61629" target="_blank" title="https://github.com/rust-lang/rust/pull/61629">https://github.com/rust-lang/rust/pull/61629</a> has some discussion about why <code>panic</code> is unique.</p>



<a name="168600069"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168600069" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168600069">(Jun 20 2019 at 14:23)</a>:</h4>
<p>wait why did I think <code>assert_eq!</code> was builtin now?</p>



<a name="168600125"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168600125" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168600125">(Jun 20 2019 at 14:24)</a>:</h4>
<p>oh <code>assert!</code> is! sorry, got confused between the two</p>



<a name="168600142"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168600142" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168600142">(Jun 20 2019 at 14:24)</a>:</h4>
<p>so, it seems we have a choice here</p>



<a name="168600157"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168600157" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168600157">(Jun 20 2019 at 14:24)</a>:</h4>
<p>either we close "regression: assert_eq cannot find panic with no_implicit_prelude" <a href="https://github.com/rust-lang/rust/issues/61567" target="_blank" title="https://github.com/rust-lang/rust/issues/61567">#61567</a> as <strong>wont-fix</strong></p>



<a name="168600174"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168600174" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168600174">(Jun 20 2019 at 14:25)</a>:</h4>
<p>or we backport "resolve: Temporarily make panic available with no_implicit_prelude" <a href="https://github.com/rust-lang/rust/issues/61971" target="_blank" title="https://github.com/rust-lang/rust/issues/61971">#61971</a></p>



<a name="168600234"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168600234" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168600234">(Jun 20 2019 at 14:25)</a>:</h4>
<p>I don't have an opinion. It seems like everyone who has spoken up here in an actual message is in favor of closing <a href="https://github.com/rust-lang/rust/issues/61567" target="_blank" title="https://github.com/rust-lang/rust/issues/61567">#61567</a> as wont-fix (and then closing the PR <a href="https://github.com/rust-lang/rust/issues/61971" target="_blank" title="https://github.com/rust-lang/rust/issues/61971">#61971</a> without merging it)</p>



<a name="168600309"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168600309" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168600309">(Jun 20 2019 at 14:26)</a>:</h4>
<p>Is this an incorrect summary of the dialogue so far? Is there anyone who wants to speak up in favor of treating <a href="https://github.com/rust-lang/rust/issues/61567" target="_blank" title="https://github.com/rust-lang/rust/issues/61567">#61567</a> as a <strong>must-fix</strong> stable-to-beta regression ?</p>



<a name="168600325"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168600325" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168600325">(Jun 20 2019 at 14:26)</a>:</h4>
<blockquote>
<p>Macros defined in libcore do not want to call core::panic.</p>
</blockquote>
<p>Wait... these two macros are not the same? wtf...</p>



<a name="168600344"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168600344" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168600344">(Jun 20 2019 at 14:27)</a>:</h4>
<p>(<code>std::panic</code> and <code>core::panic</code>)</p>



<a name="168600447"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168600447" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168600447">(Jun 20 2019 at 14:28)</a>:</h4>
<p>yeah the <code>std::panic</code> one can make a <code>Box&lt;dyn Any+'static&gt;</code></p>



<a name="168600458"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168600458" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168600458">(Jun 20 2019 at 14:28)</a>:</h4>
<p>arguably it should be in <code>alloc</code>. but I guess it depends on panic machinery in <code>std</code></p>



<a name="168600510"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168600510" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168600510">(Jun 20 2019 at 14:29)</a>:</h4>
<p>I haven't heard anyone speak up in favor of "fixing" <a href="https://github.com/rust-lang/rust/issues/61567" target="_blank" title="https://github.com/rust-lang/rust/issues/61567">#61567</a></p>



<a name="168600517"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168600517" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168600517">(Jun 20 2019 at 14:29)</a>:</h4>
<p>so I'm going to close it as wont-fix</p>



<a name="168600709"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168600709" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168600709">(Jun 20 2019 at 14:31)</a>:</h4>
<p>okay, next beta-nom: "Fix ICE involving mut references" <a href="https://github.com/rust-lang/rust/issues/61947" target="_blank" title="https://github.com/rust-lang/rust/issues/61947">#61947</a></p>



<a name="168600769"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168600769" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168600769">(Jun 20 2019 at 14:31)</a>:</h4>
<p>okay accepting</p>



<a name="168600855"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168600855" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168600855">(Jun 20 2019 at 14:32)</a>:</h4>
<p>next beta-nom: "rustc_typeck: correctly compute <code>Substs</code> for <code>Res::SelfCtor</code>." <a href="https://github.com/rust-lang/rust/issues/61896" target="_blank" title="https://github.com/rust-lang/rust/issues/61896">#61896</a></p>



<a name="168600898"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168600898" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168600898">(Jun 20 2019 at 14:33)</a>:</h4>
<p>okay accepting</p>



<a name="168600925"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168600925" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168600925">(Jun 20 2019 at 14:33)</a>:</h4>
<p>(I think the feature was stabilized in beta already so this is needed)</p>



<a name="168600967"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168600967" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168600967">(Jun 20 2019 at 14:34)</a>:</h4>
<p>next beta-nom: "Fix rust-lldb wrapper scripts." <a href="https://github.com/rust-lang/rust/issues/61827" target="_blank" title="https://github.com/rust-lang/rust/issues/61827">#61827</a></p>



<a name="168601006"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601006" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601006">(Jun 20 2019 at 14:34)</a>:</h4>
<p>why is this beta nominated ...</p>



<a name="168601018"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601018" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601018">(Jun 20 2019 at 14:34)</a>:</h4>
<p><span class="user-mention" data-user-id="121055">@Pietro Albini</span> ^ ?</p>



<a name="168601035"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601035" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601035">(Jun 20 2019 at 14:34)</a>:</h4>
<p>oh I see, the author requested it be so</p>



<a name="168601051"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601051" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601051">(Jun 20 2019 at 14:35)</a>:</h4>
<p>the fact it hasn't gotten r+'ed yet makes me inclined to not approve it at this time</p>



<a name="168601072"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601072" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601072">(Jun 20 2019 at 14:35)</a>:</h4>
<p>yeah, the author requested that</p>



<a name="168601080"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601080" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601080">(Jun 20 2019 at 14:35)</a>:</h4>
<p>I should probably leave an explicit comment next time</p>



<a name="168601082"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601082" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601082">(Jun 20 2019 at 14:35)</a>:</h4>
<p>(we do accept backports of unreviewed things, but only when they are stable-to-beta regressions, I think.)</p>



<a name="168601089"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601089" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601089">(Jun 20 2019 at 14:35)</a>:</h4>
<p>no its okay, you were reflecting author's intent</p>



<a name="168601120"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601120" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601120">(Jun 20 2019 at 14:35)</a>:</h4>
<p>I mean, it was r+ed but it got rebased, and it's currently in niko's all hands limbo</p>



<a name="168601178"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601178" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601178">(Jun 20 2019 at 14:36)</a>:</h4>
<p>(sorry y'all, I forgot to add the emoji vote buttons earlier)</p>



<a name="168601190"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601190" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601190">(Jun 20 2019 at 14:36)</a>:</h4>
<p>oh was it r+'ed?</p>



<a name="168601199"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601199" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601199">(Jun 20 2019 at 14:36)</a>:</h4>
<p>By niko</p>



<a name="168601201"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601201" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601201">(Jun 20 2019 at 14:36)</a>:</h4>
<p>I see, yes it was</p>



<a name="168601216"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601216" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601216">(Jun 20 2019 at 14:36)</a>:</h4>
<p>I still personally see no need</p>



<a name="168601227"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601227" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601227">(Jun 20 2019 at 14:36)</a>:</h4>
<p>rather have it just go through the nightly</p>



<a name="168601338"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601338" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601338">(Jun 20 2019 at 14:38)</a>:</h4>
<p>okay lets move along</p>



<a name="168601406"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601406" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601406">(Jun 20 2019 at 14:38)</a>:</h4>
<p>(I'm going to decline, with explanation that its too close to beta cutoff to land this given that its not fixing a high priorty bug)</p>



<a name="168601525"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601525" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601525">(Jun 20 2019 at 14:40)</a>:</h4>
<p>next beta-nom: "Fix cfg(test) build for x86_64-fortanix-unknown-sgx" <a href="https://github.com/rust-lang/rust/issues/61503" target="_blank" title="https://github.com/rust-lang/rust/issues/61503">#61503</a></p>



<a name="168601559"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601559" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601559">(Jun 20 2019 at 14:40)</a>:</h4>
<p>ah yes this does seem important</p>



<a name="168601578"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601578" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601578">(Jun 20 2019 at 14:41)</a>:</h4>
<p>(for our internal QA of release)</p>



<a name="168601623"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601623" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601623">(Jun 20 2019 at 14:41)</a>:</h4>
<p>next beta-nom: "Dont ICE on an attempt to use GAT without feature gate" <a href="https://github.com/rust-lang/rust/issues/61118" target="_blank" title="https://github.com/rust-lang/rust/issues/61118">#61118</a></p>



<a name="168601708"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601708" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601708">(Jun 20 2019 at 14:42)</a>:</h4>
<p>(good old <code>delay_span_bug</code> ...)</p>



<a name="168601860"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601860" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601860">(Jun 20 2019 at 14:44)</a>:</h4>
<p>though looking at this now, I admit I'm confused as to how <a href="https://github.com/rust-lang/rust/issues/56445" target="_blank" title="https://github.com/rust-lang/rust/issues/56445">#56445</a> ends up being related to GAT's ...</p>



<a name="168601880"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601880" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601880">(Jun 20 2019 at 14:44)</a>:</h4>
<p>or maybe that's the whole point; its not related to GAT's.</p>



<a name="168601894"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601894" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601894">(Jun 20 2019 at 14:44)</a>:</h4>
<p>but its still an issue with the early-lifetime-param stuff</p>



<a name="168601896"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601896" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601896">(Jun 20 2019 at 14:44)</a>:</h4>
<p>hmm</p>



<a name="168601914"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168601914" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168601914">(Jun 20 2019 at 14:45)</a>:</h4>
<p>well anyway seems safer to beta-backport</p>



<a name="168602023"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602023" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602023">(Jun 20 2019 at 14:46)</a>:</h4>
<p>last beta-nom: "Limit dylib symbols" <a href="https://github.com/rust-lang/rust/issues/59752" target="_blank" title="https://github.com/rust-lang/rust/issues/59752">#59752</a></p>



<a name="168602043"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602043" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602043">(Jun 20 2019 at 14:46)</a>:</h4>
<p>What about the hygiene PR?</p>



<a name="168602093"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602093" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602093">(Jun 20 2019 at 14:47)</a>:</h4>
<p>oh acutaly</p>



<a name="168602113"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602113" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602113">(Jun 20 2019 at 14:47)</a>:</h4>
<p>there's a bunch of beta-nom'ed PR's that I should have prep-passed to add T-compiler label</p>



<a name="168602118"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602118" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602118">(Jun 20 2019 at 14:47)</a>:</h4>
<p>so lets take care of that</p>



<a name="168602124"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602124" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602124">(Jun 20 2019 at 14:47)</a>:</h4>
<p>(I'll mark <a href="https://github.com/rust-lang/rust/issues/59752" target="_blank" title="https://github.com/rust-lang/rust/issues/59752">#59752</a> as beta-accepted.)</p>



<a name="168602206"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602206" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602206">(Jun 20 2019 at 14:48)</a>:</h4>
<p>okay, new first beta-nom: "create a "provisional cache" to restore performance in the case of cycles" <a href="https://github.com/rust-lang/rust/issues/61754" target="_blank" title="https://github.com/rust-lang/rust/issues/61754">#61754</a></p>



<a name="168602226"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602226" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602226">(Jun 20 2019 at 14:48)</a>:</h4>
<p>Some quick notes</p>



<a name="168602240"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602240" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602240">(Jun 20 2019 at 14:48)</a>:</h4>
<p>this may not resolve <em>all</em> of the performance and overflow problems</p>



<a name="168602268"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602268" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602268">(Jun 20 2019 at 14:49)</a>:</h4>
<p>in particular I think <span class="user-mention" data-user-id="133169">@matklad</span> has noted that rust-analyzer is still having issues even on the nightly that includes <a href="https://github.com/rust-lang/rust/issues/61754" target="_blank" title="https://github.com/rust-lang/rust/issues/61754">#61754</a></p>



<a name="168602277"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602277" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602277">(Jun 20 2019 at 14:49)</a>:</h4>
<p>so this may not be a home-run</p>



<a name="168602310"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602310" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602310">(Jun 20 2019 at 14:49)</a>:</h4>
<p>also, its quite a bit bigger (and more risky) than the other PR's we've looked at so far today</p>



<a name="168602386"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602386" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Vadim Petrochenkov <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602386">(Jun 20 2019 at 14:50)</a>:</h4>
<blockquote>
<p>also, its quite a bit bigger (and more risky) than the other PR's we've looked at so far today</p>
</blockquote>
<p>It fixes a critical issue though.</p>



<a name="168602393"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602393" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602393">(Jun 20 2019 at 14:50)</a>:</h4>
<p>and finally: it hasn't had long at all to bake on Nightly</p>



<a name="168602424"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602424" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602424">(Jun 20 2019 at 14:50)</a>:</h4>
<p><span class="user-mention" data-user-id="121055">@Pietro Albini</span> do we have a week hypothetically to wait on a PR like this?</p>



<a name="168602431"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602431" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602431">(Jun 20 2019 at 14:50)</a>:</h4>
<p>to let it bake more? (that is, to let it receive more testing against Nightly)</p>



<a name="168602441"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602441" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602441">(Jun 20 2019 at 14:50)</a>:</h4>
<p>or is that cutting things too close?</p>



<a name="168602468"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602468" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602468">(Jun 20 2019 at 14:51)</a>:</h4>
<p>dunno</p>



<a name="168602469"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602469" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602469">(Jun 20 2019 at 14:51)</a>:</h4>
<p>waiting a week is fine</p>



<a name="168602493"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602493" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602493">(Jun 20 2019 at 14:51)</a>:</h4>
<p>I'll talk with alex once he wakes up at the all hands</p>



<a name="168602547"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602547" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602547">(Jun 20 2019 at 14:52)</a>:</h4>
<p>okay</p>



<a name="168602595"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602595" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602595">(Jun 20 2019 at 14:52)</a>:</h4>
<p>okay</p>



<a name="168602618"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602618" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602618">(Jun 20 2019 at 14:52)</a>:</h4>
<p>I'm going to leave this unchanged for now</p>



<a name="168602627"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602627" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602627">(Jun 20 2019 at 14:52)</a>:</h4>
<p>still beta-nominated</p>



<a name="168602632"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602632" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602632">(Jun 20 2019 at 14:52)</a>:</h4>
<p>but not beta-accepted</p>



<a name="168602642"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602642" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602642">(Jun 20 2019 at 14:52)</a>:</h4>
<p>and I'll leave a comment explainnig that w'ere currently predisposed to approve a backport</p>



<a name="168602652"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602652" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602652">(Jun 20 2019 at 14:53)</a>:</h4>
<p>but we want to wait a little while before officially marking it so, if we can</p>



<a name="168602679"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602679" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602679">(Jun 20 2019 at 14:53)</a>:</h4>
<p>next beta-nom: "Hygienize macros in the standard library" <a href="https://github.com/rust-lang/rust/issues/61629" target="_blank" title="https://github.com/rust-lang/rust/issues/61629">#61629</a></p>



<a name="168602850"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602850" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602850">(Jun 20 2019 at 14:55)</a>:</h4>
<p>oh right, I just nominated this. ha ha</p>



<a name="168602887"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168602887" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168602887">(Jun 20 2019 at 14:55)</a>:</h4>
<p>any objections? I personally am trusting <span class="user-mention" data-user-id="123856">@Vadim Petrochenkov</span> here, and the only question is whether I understood them correctly above in this meeting.</p>



<a name="168603004"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168603004" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168603004">(Jun 20 2019 at 14:57)</a>:</h4>
<p><span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span> , anyone want to weigh in other than <span class="user-mention" data-user-id="126931">@centril</span> on this?</p>



<a name="168603029"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168603029" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> oli <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168603029">(Jun 20 2019 at 14:57)</a>:</h4>
<p>I'm reading the PR</p>



<a name="168603078"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168603078" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168603078">(Jun 20 2019 at 14:58)</a>:</h4>
<p><em>that</em> is an excellent answer.</p>



<a name="168603105"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168603105" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168603105">(Jun 20 2019 at 14:58)</a>:</h4>
<p>I'm for it, I just tend not to vote on backports because my understanding was that it was those on the compiler team's decision.</p>



<a name="168603143"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168603143" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168603143">(Jun 20 2019 at 14:58)</a>:</h4>
<p>(ah true, I probably at-signed the wrong people there)</p>



<a name="168603168"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168603168" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168603168">(Jun 20 2019 at 14:59)</a>:</h4>
<p>((though anyone in the meeting is free to express a voiced opinion that might help sway T-compiler members votes))</p>



<a name="168603206"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168603206" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168603206">(Jun 20 2019 at 14:59)</a>:</h4>
<p>okay lets accept <a href="https://github.com/rust-lang/rust/issues/61629" target="_blank" title="https://github.com/rust-lang/rust/issues/61629">#61629</a> for backport</p>



<a name="168603345"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168603345" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168603345">(Jun 20 2019 at 15:00)</a>:</h4>
<p>and with that, we're at an hour</p>



<a name="168603358"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168603358" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168603358">(Jun 20 2019 at 15:00)</a>:</h4>
<p>thanks to everyone in <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span> for attending.</p>



<a name="168603372"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168603372" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168603372">(Jun 20 2019 at 15:00)</a>:</h4>
<p>Sorry we didn't get to do anything but discuss beta-backports today.</p>



<a name="168603381"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168603381" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> oli <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168603381">(Jun 20 2019 at 15:01)</a>:</h4>
<p>thanks for driving <span class="user-mention" data-user-id="116083">@pnkfelix</span></p>



<a name="168603522"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168603522" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168603522">(Jun 20 2019 at 15:02)</a>:</h4>
<p>(I will also just mention that there are a bunch of <a href="https://github.com/rust-lang/rust/issues?q=label%3AP-high+label%3AT-compiler+no%3Aassignee" target="_blank" title="https://github.com/rust-lang/rust/issues?q=label%3AP-high+label%3AT-compiler+no%3Aassignee">unassigned P-high T-compiler bugs</a>)</p>



<a name="168604970"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168604970" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168604970">(Jun 20 2019 at 15:17)</a>:</h4>
<blockquote>
<p>in particular I think <span class="user-mention silent" data-user-id="133169">matklad</span> has noted that rust-analyzer is still having issues even on the nightly that includes <a href="https://github.com/rust-lang/rust/issues/61754" target="_blank" title="https://github.com/rust-lang/rust/issues/61754">#61754</a></p>
</blockquote>
<p>link?</p>



<a name="168608117"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168608117" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168608117">(Jun 20 2019 at 15:52)</a>:</h4>
<blockquote>
<p>link?</p>
</blockquote>
<p><a href="https://github.com/rust-lang/rust/issues/61960#issuecomment-503636781" target="_blank" title="https://github.com/rust-lang/rust/issues/61960#issuecomment-503636781">link</a></p>



<a name="168620753"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168620753" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Vadim Petrochenkov <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168620753">(Jun 20 2019 at 18:21)</a>:</h4>
<p>So, I had an idea how to fix the <code>panic</code> problem discussed above in a simple way.<br>
<a href="https://github.com/rust-lang/rust/pull/62002" target="_blank" title="https://github.com/rust-lang/rust/pull/62002">https://github.com/rust-lang/rust/pull/62002</a></p>



<a name="168620896"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-06-20%20%2354818/near/168620896" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Vadim Petrochenkov <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-06-20.20.2354818.html#168620896">(Jun 20 2019 at 18:23)</a>:</h4>
<p>On a related note, perhaps we need to reserve identifiers starting with <code>__rustc</code> (or something like that).<br>
I know at least one more situation that would benefit from the same treatment as <a href="https://github.com/rust-lang/rust/issues/62002" target="_blank" title="https://github.com/rust-lang/rust/issues/62002">#62002</a> (<code>__rustc_dollar_crate</code> for processed <code>$crate</code>).</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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